Say a naval aircraft carrier is approaching it’s home port to dock and do dock stuff, and all the aircraft have already left the boat a while ago. Does it constitute as an airport and thus stay away as one does an airport? Or then is it not considered an airport and just a ship, albeit a Naval vessel, but no longer airport status and therefore no longer a no fly zone for the range one extends an airport??? And if NOT considered then qualifying for airport status at that juncture, what specifically (US) directs whether flight near naval vessels under way and not at a naval base is prohibited or not and why? Is there a minimum distance to observe?